A2919ELB-T

更新时间： 2024-11-23 13:05:15

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器运动控制电子器件信号电路光电二极管电动机控制
页数	文件大小	规格书
8页	100K
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数据手册

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A2919ELB-T 数据手册

2919

DUAL FULL-BRIDGE

MOTOR DRIVER

2919

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

The A2919SB and A2919SLB motor drivers are designed to drive

both windings of a bipolar stepper motor or bidirectionally control two

dc motors. Both bridges are capable of sustaining 45 V and include

internal pulse-width modulation (PWM) control of the output current to

750 mA. The outputs have been optimized for a low output-saturation

voltage drop (less than 1.8 V total source plus sink at 500 mA).

A2919SB

LOAD

SUPPLY

OUT

SENSE

For PWM current control, the maximum output current is deter-

mined by the user’s selection of a reference voltage and sensing

resistor. Two logic-level inputs select output current limits of 0%, 41%,

67%, or 100% of the maximum level. A PHASE input to each bridge

determines load current direction.

SENSE

OUT

GROUND

The bridges include both ground clamp and flyback diodes for

protection against inductive transients. Internally generated delays

prevent cross-over currents when switching current direction. Special

power-up sequencing is not required. Thermal protection circuitry

disables the outputs if the chip temperature exceeds safe operating

limits.

GROUND

PHASE

REF 1

REF 2

The A2919SB is supplied in a 24-pin dual in-line plastic batwing

package with a copper lead-frame and heat sinkable tabs for improved

power dissipation capabilities. The A2919SLB is supplied in a 24-lead

surface-mountable SOIC. Their batwing construction provides for

maximum package power dissipation in the smallest possible construc-

tion. The A2919SB/SLB are available for operation from -40°C to

+85°C. To order, change the suffix from 'S–' to 'E–'. These devices

are also available on special order for operation to +125°C. For

applications not requiring quarter-step operation, but desire lower

detent or running current, the similar UDN2916B/EB/LB may be pre-

ferred.

LOGIC

SUPPLY

Dwg. PP-005

ABSOLUTE MAXIMUM RATINGS

at T_J≤ 150°C

Motor Supply Voltage, V ................... 45 V

Output Current, I

OUT

(Peak, t_w≤ 20 µs) ........................ ±1.0 A

(Continuous) .......................... ±750 mA

FEATURES

Logic Supply Voltage, V ................... 7.0 V

■ 750 mA Continuous Output Current

■ 45 V Output Sustaining Voltage

■ Internal Clamp Diodes

Logic Input Voltage Range,

............................... -0.3 V to +7.0 V

Output Emitter Voltage, V .................. 1.5 V

Package Power Dissipation,

■ Internal PWM Current Control

....................................... See Graph

■ Low Output Saturation Voltage

Operating Temperature Range,

■ Internal Thermal Shutdown Circuitry

■ Half- or Quarter-Step Operation of Bipolar Stepper Motors

T ................................. -20°C to +85°C

Storage Temperature Range,

T ............................... -55°C to +150°C

Always order by complete part number:

Part Number

A2919SB

Package

R_θJA

R_θJT

Output current rating may be limited by duty cycle,

ambient temperature, and heat sinking. Under any

set of conditions, do not exceed the specified peak

current rating or a junction temperature of +150°C.

24-Pin DIP

24-Lead SOIC

40°C/W

55°C/W

6.0°C/W

A2919SLB

12 3 4 5 6 7 8

中文翻译

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与A2919ELB-T相关器件

型号	品牌	获取价格	描述	数据表
A2919ELBTR-T	ALLEGRO	获取价格	Stepper Motor Controller, 1A, PDSO24, LEAD FREE, BATWING, SOIC-24
A2919SB	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A2919SLB	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A2919SLB-T	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A2919SLBTR	ALLEGRO	获取价格	Stepper Motor Controller, 1A, BIPolar, PDSO24, BATWING, SOIC-24
A2919SLBTR-T	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A2927SEB	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A29400	AMICC	获取价格	512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory
A29400A	AMICC	获取价格	512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory
A29400ATV-55F	AMICC	获取价格	512K X 8 Bit / 256K X 16 Bit CMOS 5.0 Volt-only, Boot Sector Flash Memory

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